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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3009d29d734732df8a72cbc7b5ebe6ef55e7b908f37ca76de41ea14df639c70e' 
  AND token = 'aCYq3HjKBcU8isUdtLoKeaWt2XP3i7KgJpueeI5G2mA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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