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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3ff99fef2d277b3f40d9a24c041b46a952f24dcbd9d5e3e948b747e7e0f117b' 
  AND token = '+43MxIxr+8CTlc2ilxJebr/Ho1QPZMhufO5NOwNDjJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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