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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60b4876afcaefcb5c9a5eb97898d41ed5321cd50ae202d3a589f8b82bb55e505' 
  AND token = '6e6rVNraOcq4P2c1Yyu7/erUhbtcHc4Pkmq0d3CkwYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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