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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '180daf2b559a679e057f89b25dfccfd9e921f7f53a2b39266c6a865759dd0956' 
  AND token = 'y60iRKbdMr/zqOvsLnlE4E57HZpKl1kbw4v/4qrvrKg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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