Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb3d333eb524e3cd4484036c2153678d6e1ff8e61c2919b5d169799b469416ac' 
  AND token = 'Xm+to957pRSALqs6M2cesNvT+R2YGYn2WwZeOg3ZuG4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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