Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dac3301a9349d722f8947dec44010b12329295fc859f5d8faf971d5e874e91e3' 
  AND token = 'dPGrpT1ifjvvtTwNVWFomNa1sQyTi2QVzr1M53PjY1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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