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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22baa78f4a1d934e82d22668702e2ca72226bf8132c593ed9eaf51357c5aa610' 
  AND token = 'HPia3+KHNA5a9iu1dSWt19x71uz3ur8jGZiiTR8b/zA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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