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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16d6c3a12bb1859017f87c0b6a95593cc1422343b99256d2d80a80cdc3fe1851' 
  AND token = 'Hp2CJBtp6yH4CxqOgA+b+2Jh7qBsbbtR9PMiBW3fEoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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