Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf6d78299a2d90c3232ba971f3affac322a2fa583bafe15746c76016a85c00d9' 
  AND token = 'uA4rMhEVmLL1IQT33nHkGni6qifAExtiK/Eisq9eD/A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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