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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06225fc4ef0aad1c9b04265dad95919cb5a92dc0c83334b4488d6cebe14bc4a5' 
  AND token = 'i5yk27q6yDinsATQ6urXuuu1OpXPjP2G+6YVKz6Ps3k=' 
  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"
    }
  }
}