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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4065ea681f91cb334154f5aeae7d99ffce16c170c2b246c3ac8d38170c14a8ab' 
  AND token = 'W0S+CpE8c3vtKv7tBFugMldgTYnDice3zQzGwcfsHBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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