Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04688011fa7d7d4488c1fcbebbb593af8f480da3eeac505308cc8d651a33700e' 
  AND token = 'r8F7XFeWqDdJuWimOrUHnfd1+QreWjppYt/LiZukLu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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