Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eaefe2a8318bc2cef7f3f32009275700610352a44c4ea910fddd9577171b9e05' 
  AND token = 'm5JHEQr4a9GGtE1t6x1aYuhpSg6XZoOvDegljOTj8vc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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