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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c2f3641c035a0b73ac3cd3d4d6e21edef2613066c6d1119a00b9f2e2b3b1f24' 
  AND token = 'DugSYHKlTjC27G/2hNU+WNotJC3bK9vpdE3tod+idtc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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