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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5489c1210a0b1ce2c28f72ae90694809f3956c4a0c09d9073748d2c0bb2886c5' 
  AND token = '7/baDW84aSxsArZtX9gORJzHin/j24HOy/AZnhpsclw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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