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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '095cdf3ad01c946d6646f8667566a9f320cb1cf82771ce7c931026b6fee121de' 
  AND token = 'fkr5rqUJwk3KlL983qK3ak5a+8a8qBuie4vW7tZ+Lxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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