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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fbadcf6a73f11f65199b116573803c18e9f71a288d81f13262f42b1ebb266f33' 
  AND token = 'A5o/cG/kq1lrY4HCrP848vxhP0iTOoSyuDGDgn4h09o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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