Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0047b5c3b3f04017d486357e7b1768388140f2db5d5b187cbd2a8e80110a0b02' 
  AND token = 'lBp3jnhNbGmjxLRjQHFvnkmIeRNmxuCvNjf1XiF1NA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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