Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a3fa149d1a33a594aa345872c598a6d72afff5f5d7aa0a1accaffd6cfb38e8e' 
  AND token = 'RZyhrxPC1Mpfcooz6P50n2tUhQAqPo1sbCJs6blf/EI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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