Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26f59c60e754cff6215868585f0a5133d8e4c05bc6347099361f2bac2c90d8e8' 
  AND token = '5wo0snJHULvrfcHihDB2mlSsyHotC04MWKpbPx6e42A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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