Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01763ea8beb137d6b7c38eba989b813c262e024e56bec6937d7bea0d0aa7a631' 
  AND token = 'RtWXzQzW9APFsOArLuYdA+O+ny2i/SwRKBV66e2Zjx4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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