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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7a4488eecd426e99108853a0d49f6f9c4ce36eed5a361ff118cea5a276f2bb37' 
  AND token = 'AogqTgQzcTmJKd7o8Quk/RrtNXFTLooHQfix4o2dg7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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