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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24016c5ee124a3c62c1c9c71eedf0b01d62bb716bb1a2923f8090458bfde76c6' 
  AND token = 'g359tBw2ndv7bQ9b9yhvm+CrnhN2Y7/QFMndXn7le6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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