Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb599ed42d378d1d688279f533cf9e02a9b2478bafbe3aaf94c6d107b0b08dc4' 
  AND token = '1JAAXNtDmXQgp57b1XzNTmg91OFdP2yverbiJXyH2XU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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