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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '617259e550e4f9a550be2f13e92b0bbc931bcad06fa87ae022ea857486d92225' 
  AND token = 'cCydlZWGQjY0GU9XXfEhw0PYDf1sWd3czrifRGrfdDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}