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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce597097825c28db3608428557fc84532ebb81d90ff05ceb68b3fd732f4a8904' 
  AND token = 'Xnl8+9yE5u2OIk2wl1ytt2BU6ADLtHpY53HLrsh0ykc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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