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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f80262e487b6cc119b4dd4c5744dff72e58c7c819026bb5071320c02ef8f6605' 
  AND token = '7s/2ot2SRrsjjaiYRIFaDpVfyJTReDDkFAonUJ12Vwo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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