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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77d979ca2e4360f5e5c23c576df24032f0d1c0dc46218bc230cf5f4b41451590' 
  AND token = 'JTPaQmw1E80GFUqcWG01Ch++m3TpAwCbDc5X2AAoFUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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