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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0440c17b27936e54ec7bc6c270fb6ffd3da65601ae6383bfc241ff36e020a91' 
  AND token = '0329wwgRIeSX0jA7omGybfkk1NuNoZ3lF/W4cmMIw04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00074

JSON explain

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