Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b79d1d7a59ac87803daac47996250bd3fbbf7433d4029920f82e780d990c47f8' 
  AND token = 'za4JY6cb/z/H7ecK7pOuXHNKH+RhQlAiB4570lfR+uc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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