Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d29c2163ba31bca89a4c802ae8f447ecf3953611c6bc6798de8c4e6a9128e11' 
  AND token = 'W96Nl/dJreOWApUIDMrVSVcpLGwI+a6Wuk7sYSAX0gE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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