Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2637186e33e422dea90a5a0163c2b46a644574bac739a9988822bdfb80ecc67' 
  AND token = 'nnCswe9tpKKMM8Etgb/sj88SkOLplinsQQV81oQ0DTA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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