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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b0f36540cec9eb4c7c3bb48f97460ade116e02cbca2e676512a3a1c1c495ea1' 
  AND token = 'z0ZoF4pZBCFIoEFhNg5do4B1XSeO3Pwdf82LwydJbyQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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