SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70cdbafa194d1f2b01bd93df48126683afea0a4f6b66bcb3cd98c7e7e0e54cd0' 
  AND token = 'BQw2azNSAnhvmR1U/OOh5EYKprgYFIXN8UAQB5yXvzo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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