Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c08d86916a5a4c13fec0b15dd9529be86588a78a1b3967f03e96877f3a01290b' 
  AND token = 'Y9yZKezCDiErjkbSeA2fCs1g2bTdkrDh9aW3ZPO9qN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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