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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9fc8bbfef3c98f0b5c62ea9d2be011fe3851aa94abc7e1fb0eac39e4e16abe2' 
  AND token = 'TaNN5z8QNTrT33UWaLS1J8Peig7p7NXFAQtE/L9C/Gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}