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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '69db3f5afe133d458a09a48e212e9ca7e831f726ad0c5f10df5eb11d289eb513' 
  AND token = 'Pv8M2fopCsGALzDr2XRdYA4C6SeUMRD2jtxzKp4mOHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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