Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f614639c03811d1d559bd73218fdbb1c2565af4edc9088738e3230e5dbf75ac0' 
  AND token = 'rzR9RzjjDCp24KJnP0aYbf9CBh3pI84iQJC1NOhhzwM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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