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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05c528bb90d33382e516f24177c21237d86f7e97282e3a34cb1e24ab177d687e' 
  AND token = '2MnICs2OkE+bullcMu2ATvTwNBHDSDVd+81vwftef0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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