Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5b322ed67f580265e599b9cf1edc4edf5e1c69f077db7f2d37c1417f929fe80' 
  AND token = 'ipS4x52ubDIa6TQDy+S0HSX+w+rAXDaWuReDTlqxKi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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