SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '963de22ddc96eb77001fc7324ad63b6bacd81daab1c74aa03c3ac9a852271933' 
  AND token = 'p4kowbUEBlE8/ZB3yPpNomKM+4n/JRjsfU2BYg0Gky4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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