Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0baf463f2f114839452fe2f670ebe3f663557b05101abaca4c2f0f4995ae0f08' 
  AND token = 'zWpNnQKBRdXZt4E/uzobMY4MWeGK45CjeECCl6L74gw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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