Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3aef152d33ad29e7127303b2b701e0ea19bf8a80502254254ab41ff479d65ac3' 
  AND token = 'WjRuQ8a5+5A8GEhSofCadGXAa05bZS/mnjT387MaHkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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