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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4898df42d04c45dce6f9789a1bb9d83962e141e12f39c7bb126f81ead6672515' 
  AND token = 'oAzXogsq/piHOd5d2EjpQyWQ52+cn2Sc0l6jnM1k624=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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