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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e69110559cb1919e7c0a88ddfcbba66cf1be7996381caed1ff35e0787cc00320' 
  AND token = 'H3UIyrcLqdKmPUAKSlDr5NuQ2R1HWNsgmnb5fwvA5V0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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