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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c095465fd3c996026326cfbdac077e03156363cdeeca3725d4008e4f7d13f914' 
  AND token = 'YlsE37ET4f0ZphCQ9jWIcUXZGHJzBlm1Zp+q6a5cCo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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