Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef98fae5c46410d5780728f7f90693ed960b3b7aa3635ebda7a3f502ebb8ebdc' 
  AND token = 'VGBo8z3NxmRhTeDzB1R6fsasVLX79xLki0v0WJX1gZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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