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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e0c675885900af67a022ed927ff0e2e7d33872dd52acc9162b3680d8c13e2bf' 
  AND token = 'F9+9GMi9KlR7TXlPx/NxqUVDLhJ3pHNrCjmfK4YG2c8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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