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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69227a49c2a692c3f47eb2230cb6a86f15d6fccf8d72363ba9b67a6adb38a383' 
  AND token = '3tdQ0/n+e6wwk6L/tDNiiMML2oSP8VFE0yE5XTmgwQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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