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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fc9b160904c368178665578ac9b9aa191c08550ab2cefd639753ad0435a47815' 
  AND token = 'L8dvqTkl/ioanRIpTLe54UAZKhn1rlVh4bLLJe+QTzo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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