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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9098c08aa826cb565abd5ceebff0cf53cb77565880f0a02a457e10b07d6728c3' 
  AND token = 'NpAC3GcAMqYVh5P16xsheU7Jt1PD0kwZm4lzAMz5q5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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